News

US - The total number of swine accessions and diagnostic case submissions testing positive for the Porcine Epidemic Diarrhoea (PED) virus now stands at 2,394, writes Jackie Linden.

By farm class, this figure for the total number of positive laboratory swine accessions/diagnostic case submissions as follows between the weeks of 15 April and 12 January: suckling, 486 (+18); nursery, 472 (+24); grower/finisher, 690 (+19); sows/boars, 257 (+10) and 533 (+62) unknown. The total is up 122 from the previous week.

No states have reported a first positive test results in the last week and so the total number of states remains at 23. Those states with 20 or more positive tests are: Iowa, 882; North Carolina, 319; Minnesota, 294; Oklahoma, 284; Kansas, 159; Illinois, 92; Ohio, 74; Indiana, 73; Colorado, 39; Texas, 33 and Pennsylvania, 30.

For the most recent week, Minnesota leads the 'league table' in the number of new positive results, accounting for 30 of the total of 122 new cases, followed by Iowa with 29 and Illinois with 10.

As last week, there is a high proportion (62 of the total of 122) of the positive results in the most recent week (12 January) of "unknown" origin in terms of the phase of production; 10 were in sows/boars, and a further 18, 24 and 19 cases in the "suckling", "nursery" and "grow-finish" categories, respectively.

In mid-June, the reporting system was adjusted. For the weeks prior to 16 June, laboratories were able to provide diagnostic case submissions as well as the number of premises testing positive for the PED virus (PEDv). Since 16 June, the data refer only to diagnostic cases submissions ('swine accessions').

From the week of 16 June to that of 12 January, the total number of biological (swine) samples testing positive is 7,775 - up 597 from the previous week and another record increase. The most-affected states by this measure are: North Carolina, 2,103; Iowa, 1,761; Oklahoma, 1,042; Minnesota, 720; Kansas, 686; Illinois, 521; Ohio, 235; Colorado, 127, Missouri, 115, Texas, 109; Indiana, 92 and Pennsylvania, 90. Other states, where positive, reported 50 positives or fewer.